panic: kernel diagnostic assertion "_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_device.c", line 230 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *438977 80105 0 0 0x4000000 0 syz-executor.1 465536 22740 0 0x2 0x480 1 syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff824502ee) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff824bffea,ffffffff824476b7,e6,ffffffff824ce6c6) at __assert+0x25 sys/kern/subr_prf.c:161 udv_reference(ffff800000b3c100) at udv_reference+0x84 sys/uvm/uvm_device.c:230 uvm_mapent_clone(fffffd806f63de68,2000,1fe000,0,7,7) at uvm_mapent_clone+0x1a2 sys/uvm/uvm_map.c:3810 uvm_share(fffffd806f63de68,0,7,fffffd806f63d008,20000000,200000) at uvm_share+0x45c uvm_mapent_share sys/uvm/uvm_map.c:3840 [inline] uvm_share(fffffd806f63de68,0,7,fffffd806f63d008,20000000,200000) at uvm_share+0x45c sys/uvm/uvm_map.c:3739 vm_impl_init_vmx(ffff800021247810,ffff80002124efc0) at vm_impl_init_vmx+0xb4 sys/arch/amd64/amd64/vmm.c:1591 vm_create(ffff800000b60000,ffff80002124efc0) at vm_create+0x19b vm_impl_init sys/arch/amd64/amd64/vmm.c:1690 [inline] vm_create(ffff800000b60000,ffff80002124efc0) at vm_create+0x19b sys/arch/amd64/amd64/vmm.c:1510 vmmioctl(a00,c5005601,ffff800000b60000,1,ffff80002124efc0) at vmmioctl+0x1f2 VOP_IOCTL(fffffd806e0654b0,c5005601,ffff800000b60000,1,fffffd807f7d8300,ffff80002124efc0) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:295 vn_ioctl(fffffd8065b0a448,c5005601,ffff800000b60000,ffff80002124efc0) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002124efc0,ffff8000244c7438,ffff8000244c7480) at sys_ioctl+0x4a2 syscall(ffff8000244c7500) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000244c7500) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc5c8dae5ff0, count: 1 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_device.c", line 230 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff824502ee) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff824bffea,ffffffff824476b7,e6,ffffffff824ce6c6) at __assert+0x25 sys/kern/subr_prf.c:161 udv_reference(ffff800000b3c100) at udv_reference+0x84 sys/uvm/uvm_device.c:230 uvm_mapent_clone(fffffd806f63de68,2000,1fe000,0,7,7) at uvm_mapent_clone+0x1a2 sys/uvm/uvm_map.c:3810 uvm_share(fffffd806f63de68,0,7,fffffd806f63d008,20000000,200000) at uvm_share+0x45c uvm_mapent_share sys/uvm/uvm_map.c:3840 [inline] uvm_share(fffffd806f63de68,0,7,fffffd806f63d008,20000000,200000) at uvm_share+0x45c sys/uvm/uvm_map.c:3739 vm_impl_init_vmx(ffff800021247810,ffff80002124efc0) at vm_impl_init_vmx+0xb4 sys/arch/amd64/amd64/vmm.c:1591 vm_create(ffff800000b60000,ffff80002124efc0) at vm_create+0x19b vm_impl_init sys/arch/amd64/amd64/vmm.c:1690 [inline] vm_create(ffff800000b60000,ffff80002124efc0) at vm_create+0x19b sys/arch/amd64/amd64/vmm.c:1510 vmmioctl(a00,c5005601,ffff800000b60000,1,ffff80002124efc0) at vmmioctl+0x1f2 VOP_IOCTL(fffffd806e0654b0,c5005601,ffff800000b60000,1,fffffd807f7d8300,ffff80002124efc0) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:295 vn_ioctl(fffffd8065b0a448,c5005601,ffff800000b60000,ffff80002124efc0) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002124efc0,ffff8000244c7438,ffff8000244c7480) at sys_ioctl+0x4a2 syscall(ffff8000244c7500) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000244c7500) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc5c8dae5ff0, count: -14 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000244c6da0 rbx 0xffffffff8280abff cpu_info_full_primary+0x2bff rdx 0x8b rcx 0x2 rax 0x8c r8 0xffffffff81a0be34 kprintf+0x144 r9 0x1 r10 0xf55310f856de0382 r11 0xc594c50fd83f9b91 r12 0xffffffff8280aa00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff81e3e908 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000244c6d90 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=438977 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002124f260,0xffffffff82913618 process=0xffff8000ffff90c8 user=0xffff8000244c2000, vmspace=0xfffffd806f63d008 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 80105 156593 94284 0 2 0 syz-executor.1 *80105 438977 94284 0 7 0x4000000 syz-executor.1 7027 331741 22740 0 2 0 syz-executor.0 7027 156114 22740 0 3 0x4000080 fsleep syz-executor.0 63380 246744 0 0 3 0x14200 bored sosplice 94284 456190 82337 0 3 0x82 nanoslp syz-executor.1 22740 465536 82337 0 7 0x482 syz-executor.0 82337 400216 98608 0 3 0x82 thrsleep syz-fuzzer 82337 95211 98608 0 3 0x4000082 thrsleep syz-fuzzer 82337 99195 98608 0 3 0x4000082 thrsleep syz-fuzzer 82337 514246 98608 0 3 0x4000082 thrsleep syz-fuzzer 82337 14965 98608 0 3 0x4000082 kqread syz-fuzzer 82337 226882 98608 0 3 0x4000082 thrsleep syz-fuzzer 82337 205882 98608 0 3 0x4000082 thrsleep syz-fuzzer 82337 321197 98608 0 3 0x4000082 thrsleep syz-fuzzer 98608 10759 66379 0 3 0x10008a sigsusp ksh 66379 413744 91035 0 3 0x9a select sshd 9815 851 1 0 3 0x100083 ttyin getty 91035 337438 1 0 3 0x88 select sshd 62183 15478 97255 74 3 0x100092 bpf pflogd 97255 104387 1 0 3 0x80 netio pflogd 36988 17618 94037 73 3 0x100090 kqread syslogd 94037 77487 1 0 3 0x100082 netio syslogd 86279 323623 1 0 3 0x100080 kqread resolvd 8936 366230 58583 77 3 0x100092 kqread dhcpleased 98533 234948 58583 77 3 0x100092 kqread dhcpleased 58583 266161 1 0 3 0x80 kqread dhcpleased 41217 511238 0 0 3 0x14200 bored smr 77645 391609 0 0 2 0x14200 zerothread 10851 270071 0 0 3 0x14200 aiodoned aiodoned 14923 424780 0 0 3 0x14200 syncer update 7716 308658 0 0 3 0x14200 cleaner cleaner 58297 92280 0 0 3 0x14200 reaper reaper 34843 363729 0 0 3 0x14200 pgdaemon pagedaemon 49973 505948 0 0 3 0x14200 bored crynlk 57275 449177 0 0 3 0x14200 bored crypto 33197 466410 0 0 3 0x14200 bored viomb 79501 124530 0 0 3 0x40014200 acpi0 acpi0 86983 110451 0 0 3 0x40014200 idle1 50029 409723 0 0 3 0x14200 bored softnet 56664 320526 0 0 3 0x14200 bored systqmp 10115 296597 0 0 3 0x14200 bored systq 43149 196729 0 0 3 0x40014200 bored softclock 46596 357065 0 0 3 0x40014200 idle0 1 407433 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 80105 (syz-executor.1) thread 0xffff80002124efc0 (438977) shared rwlock vmmaplk r = 0 (0xfffffd806f63d020) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 uvm_share+0xd2 vm_map_lock_read_ln sys/uvm/uvm_map.c:5447 [inline] #1 uvm_share+0xd2 sys/uvm/uvm_map.c:3691 #2 vm_impl_init_vmx+0xb4 sys/arch/amd64/amd64/vmm.c:1591 #3 vm_create+0x19b vm_impl_init sys/arch/amd64/amd64/vmm.c:1690 [inline] #3 vm_create+0x19b sys/arch/amd64/amd64/vmm.c:1510 #4 vmmioctl+0x1f2 #5 VOP_IOCTL+0x9a sys/kern/vfs_vops.c:295 #6 vn_ioctl+0xba sys/kern/vfs_vnops.c:531 #7 sys_ioctl+0x4a2 #8 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #9 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd806f63de80) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 rw_enter+0x3e2 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5425 #3 uvm_share+0xaa vm_map_lock_read_ln sys/uvm/uvm_map.c:5446 [inline] #3 uvm_share+0xaa sys/uvm/uvm_map.c:3691 #4 vm_impl_init_vmx+0xb4 sys/arch/amd64/amd64/vmm.c:1591 #5 vm_create+0x19b vm_impl_init sys/arch/amd64/amd64/vmm.c:1690 [inline] #5 vm_create+0x19b sys/arch/amd64/amd64/vmm.c:1510 #6 vmmioctl+0x1f2 #7 VOP_IOCTL+0x9a sys/kern/vfs_vops.c:295 #8 vn_ioctl+0xba sys/kern/vfs_vnops.c:531 #9 sys_ioctl+0x4a2 #10 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #11 Xsyscall+0x128 exclusive rwlock vmlistlock r = 0 (0xffff800000655c78) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 vm_create+0x12e vm_impl_init sys/arch/amd64/amd64/vmm.c:1688 [inline] #1 vm_create+0x12e sys/arch/amd64/amd64/vmm.c:1510 #2 vmmioctl+0x1f2 #3 VOP_IOCTL+0x9a sys/kern/vfs_vops.c:295 #4 vn_ioctl+0xba sys/kern/vfs_vnops.c:531 #5 sys_ioctl+0x4a2 #6 syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] #6 syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10122 6421K 6679K 78643K 11405 0 pcb 13 8K 8K 78643K 23 0 rtable 109 3K 4K 78643K 188 0 ifaddr 44 10K 10K 78643K 45 0 sysctl 2 0K 0K 78643K 2 0 counters 44 34K 34K 78643K 44 0 ioctlops 1 2K 4K 78643K 1487 0 iov 0 0K 12K 78643K 11 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 6 0 vnodes 1216 76K 77K 78643K 1277 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 41 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 25K 78643K 389 0 sigio 0 0K 0K 78643K 14 0 proc 70 87K 111K 78643K 343 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 8 0 in_multi 33 2K 2K 78643K 33 0 ether_multi 1 0K 0K 78643K 2 0 mrt 0 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 2K 78643K 413 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 249 32K 32K 78643K 6432 0 UVM aobj 7 2K 2K 78643K 7 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 4 0 NDP 6 0K 0K 78643K 10 0 temp 80 4199K 4263K 78643K 3138 0 kqueue 10 14K 19K 78643K 22 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 32 0 29 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 59 0 44 1 0 1 1 0 8 0 syncache 296 6 0 6 2 1 1 1 0 8 1 tcpqe 32 207 0 207 2 2 0 2 0 8 0 tcpcb 736 28 0 22 1 0 1 1 0 8 0 arp 120 6 0 0 1 0 1 1 0 8 0 inpcb 304 94 0 87 2 0 2 2 0 8 1 nd6 48 6 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 2 0 0 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 17 0 3 1 0 1 1 0 8 0 pfstkey 112 17 0 3 1 0 1 1 0 8 0 pfstate 320 17 0 3 2 0 2 2 0 8 0 pfrule 1360 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 188 0 0 12 0 12 12 0 8 0 art_table 32 189 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semupl 112 5 0 5 1 0 1 1 0 8 1 semapl 112 39 0 29 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1832 0 422 89 0 89 89 0 8 0 ffsino 272 1832 0 422 95 0 95 95 0 8 0 nchpl 144 2437 0 817 61 0 61 61 0 8 0 uvmvnodes 72 1916 0 0 35 0 35 35 0 8 0 vnodes 224 1916 0 0 113 0 113 113 0 8 0 namei 1024 6411 0 6411 2 1 1 1 0 8 1 percpumem 16 34 0 0 1 0 1 1 0 8 0 vmpool 560 1 0 0 1 0 1 1 0 8 0 scxspl 216 7952 0 7952 9 3 6 8 0 8 6 plimitpl 152 23 0 14 1 0 1 1 0 8 0 sigapl 424 640 0 604 6 1 5 5 0 8 0 futexpl 56 2348 0 2347 1 0 1 1 0 8 0 knotepl 112 46 0 0 2 0 2 2 0 8 0 kqueuepl 216 317 0 309 1 0 1 1 0 8 0 pipepl 336 96 0 86 2 0 2 2 0 8 1 fdescpl 496 623 0 604 3 0 3 3 0 8 0 filepl 152 2208 0 2093 5 0 5 5 0 8 0 lockfpl 104 38 0 36 1 0 1 1 0 8 0 lockfspl 48 13 0 11 1 0 1 1 0 8 0 sessionpl 144 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 135 0 123 1 0 1 1 0 8 0 zombiepl 144 604 0 604 2 1 1 1 0 8 1 processpl 1072 640 0 604 3 0 3 3 0 8 0 procpl 672 1130 0 1085 5 1 4 5 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 480 187 0 162 5 0 5 5 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 254 0 0 31 0 31 31 0 8 0 mtagpl 96 12 0 0 1 0 1 1 0 8 0 mbufpl 256 459 0 0 28 0 28 28 0 8 0 bufpl 280 4068 0 144 281 0 281 281 0 8 0 anonpl 24 153357 0 131436 135 2 133 133 0 186 0 amapchunkpl 152 14782 0 14113 29 2 27 27 0 158 0 amappl16 200 1721 0 884 45 0 45 45 0 8 0 amappl15 192 2 0 1 1 0 1 1 0 8 0 amappl14 184 5 0 5 1 1 0 1 0 8 0 amappl13 176 31 0 30 1 0 1 1 0 8 0 amappl12 168 11 0 7 1 0 1 1 0 8 0 amappl11 160 238 0 221 1 0 1 1 0 8 0 amappl10 152 216 0 205 1 0 1 1 0 8 0 amappl9 144 234 0 232 1 0 1 1 0 8 0 amappl8 136 390 0 346 2 0 2 2 0 8 0 amappl7 128 74 0 60 1 0 1 1 0 8 0 amappl6 120 127 0 114 1 0 1 1 0 8 0 amappl5 112 712 0 690 1 0 1 1 0 8 0 amappl4 104 763 0 736 1 0 1 1 0 8 0 amappl3 96 56 0 52 1 0 1 1 0 8 0 amappl2 88 469 0 416 2 0 2 2 0 8 0 amappl1 80 13931 0 13473 14 4 10 13 0 8 0 amappl 88 6102 0 5917 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 64 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 624 0 604 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 624 0 604 1 0 1 1 0 8 0 vmmpekpl 168 7954 0 7925 2 0 2 2 0 8 0 vmmpepl 168 69359 0 67058 128 5 123 128 0 357 22 vmsppl 368 623 0 604 2 0 2 2 0 8 0 rwobjpl 56 15578 0 13948 24 0 24 24 0 8 1 pdppl 4096 1256 0 1208 69 21 48 50 0 8 0 pvpl 32 420429 0 394830 211 0 211 211 0 265 4 pmappl 224 623 0 604 2 0 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 344 0 24 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff824502ee) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff824bffea,ffffffff824476b7,e6,ffffffff824ce6c6) at __assert+0x25 sys/kern/subr_prf.c:161 udv_reference(ffff800000b3c100) at udv_reference+0x84 sys/uvm/uvm_device.c:230 uvm_mapent_clone(fffffd806f63de68,2000,1fe000,0,7,7) at uvm_mapent_clone+0x1a2 sys/uvm/uvm_map.c:3810 uvm_share(fffffd806f63de68,0,7,fffffd806f63d008,20000000,200000) at uvm_share+0x45c uvm_mapent_share sys/uvm/uvm_map.c:3840 [inline] uvm_share(fffffd806f63de68,0,7,fffffd806f63d008,20000000,200000) at uvm_share+0x45c sys/uvm/uvm_map.c:3739 vm_impl_init_vmx(ffff800021247810,ffff80002124efc0) at vm_impl_init_vmx+0xb4 sys/arch/amd64/amd64/vmm.c:1591 vm_create(ffff800000b60000,ffff80002124efc0) at vm_create+0x19b vm_impl_init sys/arch/amd64/amd64/vmm.c:1690 [inline] vm_create(ffff800000b60000,ffff80002124efc0) at vm_create+0x19b sys/arch/amd64/amd64/vmm.c:1510 vmmioctl(a00,c5005601,ffff800000b60000,1,ffff80002124efc0) at vmmioctl+0x1f2 VOP_IOCTL(fffffd806e0654b0,c5005601,ffff800000b60000,1,fffffd807f7d8300,ffff80002124efc0) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:295 vn_ioctl(fffffd8065b0a448,c5005601,ffff800000b60000,ffff80002124efc0) at vn_ioctl+0xba sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002124efc0,ffff8000244c7438,ffff8000244c7480) at sys_ioctl+0x4a2 syscall(ffff8000244c7500) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000244c7500) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc5c8dae5ff0, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82838a18) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82838a18) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82838a18,1) at __mp_acquire_count+0x4c sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:433 sleep_finish(ffff800021280df0,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433 tsleep(ffffffff8291e840,120,ffffffff82432f56,2) at tsleep+0x125 sys/kern/kern_synch.c:158 sys_nanosleep(ffff80002124e540,ffff800021280f10,ffff800021280f60) at sys_nanosleep+0x1f5 sys/kern/kern_time.c:299 syscall(ffff800021280fe0) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021280fe0) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff2e60, count: 4 ddb{1}> trace x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82838a18) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82838a18) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82838a18,1) at __mp_acquire_count+0x4c sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:433 sleep_finish(ffff800021280df0,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433 tsleep(ffffffff8291e840,120,ffffffff82432f56,2) at tsleep+0x125 sys/kern/kern_synch.c:158 sys_nanosleep(ffff80002124e540,ffff800021280f10,ffff800021280f60) at sys_nanosleep+0x1f5 sys/kern/kern_time.c:299 syscall(ffff800021280fe0) at syscall+0x5a9 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021280fe0) at syscall+0x5a9 sys/arch/amd64/amd64/trap.c:587 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff2e60, count: -11